Abstract: Taking II020803 working face of coal mine as the background, the theoretical analysis, numerical simulation and field practice for gas and residual coal spontaneous combustion coupling disaster prevention and control in goaf are studied. The results show that the gas explosion triangle area is mainly located in the working face and the area along the goaf, and the mixed gas concentration in this area is suitable, and an explosion may occur when an ignition source of sufficient energy is encountered. When the oxidation reaction occurs in the area where the oxidation zone of goaf in the same layer and the explosion zone coincide, the temperature of the coal body and its surroundings will rise. Once the temperature exceeds the CH₄ ignition point, a gas explosion will occur. The integration of high gas drainage and fire prevention drilling and the dynamic isolation control technology of goaf can make the CO concentration and CH₄ concentration in the corner of the working face decrease, which can effectively prevent and control the coupling disaster of gas explosion and coal spontaneous combustion in the working face.